It is hard to imagine sisters more different than Natalya and Nadya. Natalya is thirty; she loves dancing and partying, and at home she throws vicious tantrums because she cannot get married. Nadya is eighteen, absorbed in her studies and reading, yet she unwittingly attracts suitors with her beauty and kind heart. Young men in their settlement are worth their weight in gold, so Natalya envies her sister. With her mother’s matchmaking, she ensnares Sergei, a new factory process engineer—an orphanage graduate with a gentle nature. Yielding to the circumstances, he proposes to her. Meanwhile, poor Nadya cries into her pillow: she is in love with Sergei, but she would never dare betray her sister. Even if her sister turns out to be an ungrateful and unfaithful wife.